New technology captures energy from even the slightest breeze

As China builds wind turbines so big they alter the microclimateGermany has decided to blow in another direction. Instead of climbing towards the sky, it has opted for a quiet revolution: miniaturize and optimize. The result is a small wind turbine so efficient that it is activated by a simple breeze and borders on the theoretical limits of physics. In search of precision. At their Wildau plant, researchers from the Fraunhofer Institute for Applied Polymer Research (IAP) have developedtogether with the BBF Group, an experimental rotor with a composite structure and optimized weight. Their goal: to test whether materials engineering can improve aerodynamic performance in low wind conditions. The first prototypes are already spinning on the ground: Starting with wind of only 2.7 m/s (compared to 4 m/s for conventional models). Up to 450 revolutions per minute. Output power of 2,500 W at 10 m/s. Efficiency of 53%, bordering on the physical limit of 59% established by Betz’s law. Five units are currently being tested at different BBF Group locations to evaluate how height and location affect performance. Almost as efficient as physics allows. The Betz limit explains that No wind turbine can convert more than 59.3% of the wind’s kinetic energy into useful energy. This value represents the theoretical ceiling of aerodynamic performance. For this reason, the Fraunhofer IAP wind turbine reaches 53%, that is, 89% of the maximum possible limit, an exceptional performance for a small format turbine. In comparison, similar commercial systems barely exceed 30%. Precision engineering. The secret It’s on the rotor blades They are made of fiber composite materials and are hollow inside, without the traditional foam core. This choice reduces the total weight by 35% and improves the structural response to wind. The manufacturing process combines industrial 3D printing – capable of creating molds up to two meters per side – with an Automated Fiber Placement (AFP) system, a common technology in the aerospace industry. This method deposits fiber strips with millimeter precision before impregnating them with resin, reducing overlaps and ensuring greater structural quality. Additionally, a special laminated structure allows the blades to flex elastically during storms, rotating in the face of the wind and reducing rotation speed without the need for control mechanisms. A paradigm shift. In a global context dominated by megainfrastructures and concentration of energy power, the miniaturization of wind power represents a total change. These turbines could be installed in homes, companies, rural cooperatives or humanitarian missions. They allow energy autonomy and resilience against network outages or supply crises. The German model does not seek to compete with the giants of China, but rather to democratize the wind. Each small turbine can be integrated into local networks or microgrids, reducing transportation losses and facilitating distributed generation. Looking to the future. The next step of the project aims for complete sustainability. Fraunhofer is already working on recyclable monomaterial structures, made with a single type of polymer. This simplifies end-of-life recycling and dramatically reduces the environmental footprint, a crucial aspect as Europe prepares for mass recycling of wind blades before 2030. If field tests confirm the laboratory results, Germany could take a new turn to its strategy: combine its network of large wind farms with thousands of local microturbines that convert wind energy into a truly distributed resource. When small becomes powerful. While China raises its wind power to the sky, Germany explores the power of a breeze. Fraunhofer IAP engineers are not looking to break size records, but rather to break the efficiency ceiling. In a world that associates progress with gigantism, the future of energy may literally come in compact form. Because in the new wind race, the one who blows the strongest will not win, but the one who knows how to move best with the breeze. Image | Unsplash Xataka | The new wind energy giant will not be in China. Germany begins to build the tallest wind turbine in the world

A driver has been arrested for overloading his Seat León with 700 kg. The traffic fine is the slightest of its problems

The punishment for breaching one of the sections of the Traffic Law in its article number 76 is clear: 200 euros of fine. It is what corresponds to someone who circulates with “vehicles with the poorly conditioned or with a danger of falling.” The relative to article number 77 of the Traffic Lawin which it is stated that “circular with a vehicle that breaches the technical conditions that seriously affect road safety” is a very serious infraction, punishes drivers with 500 euros of a fine. Any of these two articles, we believe, can be applied to those who drive a car loaded with 700 kg of luggage The problem is that this luggage is stolen cable. Or that the car is not even yours. In that case, you are before the youngest of your problems. When you have a much more serious problem than a traffic fine Because this way the driver of a Seat León circulated, arrested by the Civil Guard in Pilas (Sevilla), as he collects ABC. The detainee was intercepted by the Civil Guard by spotting a very loaded vehicle. When they wanted to stop him, the driver fled on foot to try to mislead the agents who finally ended up stopping it. And the driver knew perfectly that the youngest of his problems was overweight inside his car. The car intercepted, the agents discovered that distributed in the trunk and the rear seats carried 700 kg of stolen cable. Obviously, the intention was to resell copper. But, in addition, the car appeared in the records In the name of a deceased personwhich clearly demonstrated the intention of going unnoticed. The subtraction of the telephone wiring was located between Jabugo and Castaño del Robledo (Huelva) so the driver managed to cover a part of his escape. In total, it is estimated that the detainee stole 1,250 meters of telephone wiring that would have tried to move inside the vehicle. To know how much weight we can carry in our car, we must go to the technical file. In it we will find the data of the maximum authorized mass (MMA), which is forbidden to overcome because we will be putting our safety and the performance of our vehicle at risk. There is no concrete figure of how many kg we can load in a car but, yes, the maximum figure that we can find in a MMA is 3,500 kg because above this weight we could not circulate with a driver’s bnea B that this license is designed exclusively for cars. Photo | Civil Guard In Xataka | How to take the luggage without receiving the 200 euros of the DGT fine

The Valencian Community has a single inhabited island. And when summer comes tourism is the slightest of its problems

Tabarca is a special island for many reasons. By its sizejust 1,800 meters long, a few hundred meters wide and an area of 0.3 km2. For its condition of Only inhabited island from the Valencian Community, although its census barely goes from half a hundred of neighbors. And for the particular situation that lives in the tourist stage of the Costa Blanca. Although in summer Tabarca receives thousands of visitors a day, its main problem with tourism is not the massification but The deficiencies suffering from the archipelago and worsens with the arrival of heat. Tabarca is a unique island. And not always for good. In a place in Alicante … Tabarca is a small island on the Alicante coast, located scarce Eight kilometers from the port of Santa Pola. And the “little” is more than justified. The island is around 0.3 km2 and the entire archipelago barely passes from 1,800 m long and 400 wide, which can travel from top to bottom in A small walk. Its size and their population, of just over fifty people (According to the INE There are 34 men and 25 women censored there) they make it an exceptional case. It often presents itself as The only one Populated Island of the Valencian Community and The smallest of the country with permanent population. Its location, beaches and landscapes also make it something else: a busy destination in summer. A figure: 10,000. One thing is the autumn tabarca, winter and the principle of spring and a very different summer tabarca. When the heat arrives, the island becomes a defendant destination. Both in fact that the transfer of bathers and families multiplies exponentially. Some estimates talk that in summer peak days exceed 5,000 visitors. Others raise it to 10,000. It is good for one or another figure, in October that translates into a tourist pressure that far exceeds its register. The figures handled by the local press do not always coincide, but are equally blunt. Some estimates point to more than 150,000 visitors during the summer months or even 230,000 Throughout the year. The influx of tourists also concentrates on a Very concrete season: The drip begins towards Holy Week, with the arrival of retirees of the Imserso, continues among the ends of spring and the beginning of summer with the schoolchildren and intensifies in the warmest months with visitors attracted by the beaches. Is it a problem? The tide of tourists has sneaked into the public debate of Alicante, with Voices in favor to control access to the island and apply “limits to the number of visitors” daily, a measure that already applies in other parts of the country, such as in the CIES, in Galicia. At least a year ago the Almeria City Council It was not shown However, too supportive of afor and restrictions. Others bet on DestationalizeThe demand for the bulk of tourism not to concentrate in the summer months. “The island needs a more balanced approach that considers not only beach tourism, but also ecotourism and cultural tourism, which can help distribute the load of visitors more uniformly during the year,” he said In 2024 Alejandro Triviño, from the University of Alicante, to Information. In his favor Tabarca has more than beaches. It is considered Marine reserve Since 1986 and enjoys an interesting story that links it to Berber pirates and Genoese fishermenin addition to A rich heritage which includes The wall or the Church of San Pedro and San Pablo. Something more than massification. However, the big problem of Tabarca is not the massive influx of visitors, but how they arrive and what they are once land. I explained it yesterday The country in An article Remember that the main challenge of the island in tourism is the deficiencies that it drags, a few deficiencies is that they become even more visible when the heat comes. “The problem is not tourists,” Recognize to the Diario Carmen Martí, president of the neighborhood association. “We need a comprehensive plan that condition the island for inhabitants and visitors.” The reason? In summer Tabarca receives a tide of travelers willing to spend the day on their coasts, but unlike what happens in other Arenales of Alicante, on the island –Martí complaint– They do not have some basic services. “Public toilets, shadow areas, tourist attractions such as the church or the vaults of the wall are closed, the tower is in ruins …” insists The neighborhood leader before adding one more task to the list: regulate displacements and a public transport service. “How 40 years ago”. Martí is not the only one who thinks like that. The owner of one of the island’s restaurants Recognize to The country That Tabarca has gone from being a small community that basically lived from fishing to a hyper tourist destination, but that transformation has not come accompanied by changes that make it more assumed for the locals. “Many people come and we are like 40 years ago,” Reflect. “We need a larger port, to separate the tourist from goods ships and more cultural activity so that the visit is not only sun and beach.” The list of resident requests is wide. They talk about transport, pricing disparity with which visitors are and the cost assumed by those who work on the island, of public services as basic as medical assistance or public spaces (picnic or even shadow areas) in which visitors can protect themselves during the warmer afternoons of the summer. Is it something new? No. It comes a quick search to verify that the complaints of the neighbors are not new. A year ago, during An interview In Onda Cero, Martín explained that the Island supports a tourist pressure similar to that of “any tourist area of ​​the Peninsula”. “The problem is that it is not prepared to welcome with guarantees the numerous visitors who agglomerate mainly during the months of July and August,” warns the representative of the neighbors, who regrets that “the impression that … Read more

Their figures do not give the slightest truce to the competition

China is world leader in The production of lithium batteries. If we stick to electric cars the country led by Xi Jinping Fabrica 57% of batteries that these vehicles use. Catl and Byd They are the largest manufacturers of energy accumulators on the planet with A market share in 2023 34% and 16% respectively. And if we look at electronic devices equipped with batteries, your domain is equally forceful. Only in this way are the figures in which we are about to investigate. China has reached this leadership position due to several factors. On the one hand it is The largest producer in the world of lithium and rare earths, which are the main raw materials used in the manufacture of batteries. In addition, it controls the processing of these materials and is capable of producing large -scale batteries and with a very competitive price. There is currently no indicator that invites us to anticipate that your mastery of lithium batteries will be threatened in the medium term. In just a Chinese decade of 50% market share at 80% The evolution that the lithium batteries industry has experienced in this Asian country is the result of a very ambitious strategy pergenerated by the Government a decade ago. In 2015 President Xi Jinping announced the plan “Made in China 2025”an initiative that pursued to take the country to a world leadership position in thirteen strategic technologies. In some of them, such as the production of medicines, large tractors, the manufacture of industrial machinery, the artificial intelligence (AI) or the robots does not lead, but has established itself in a competitive position. If we stick to the production of lithium batteries your market domain a decade after the implementation of the “Made in China 2025” plan is overwhelming However, in five of these Chinese technologies he is already a global leader. In the industries of unmanned aerial vehicles, solar panels, graphene, high -speed trains, and, finally, of the electric cars/lithium batteries binomial, Chinese companies are the most competitive. If we stick to the production of lithium batteries your market domain a decade after the implementation of the “Made in China 2025” plan is overwhelming, as we can see in the following graph prepared by the consultant Benchmark Mineral Intelligence. Source: Benchmark Mineral Intelligence And this country has gone from having a 50% global market share in 2015 to no less than 80% today. A decade ago his position was already good, but In 2025 your domain is absolute. Another fact that we are not overlooking is that the global production of lithium batteries in 2015 amounted to 42 GWh, while in 2024 this figure increased to 1,400 GWh. This growth is mainly explained thanks to China’s intervention. The graph also reflects the participation of Europe, North America and APAC, which is the region that includes Asia and the island areas of the Pacific excluding China on this occasion. Its market share is similar (around 6 or 7% for each of these competitive regions), so it is evident that in the medium term China’s leadership will not be threatened. However, it is curious to verify that not even South Korea, a country that officially considers its battery industry A strategic resourceyou can currently make China the slightest shadow in this area. Image | Tennen-Gas More information | Benchmark Mineral Intelligence In Xataka | Historic record for China: its chips industry has produced in 2024 more than ever despite the sanctions

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